Christians are leaving theU.S. militaryor are discouraged from joining in the first place because of a “hostile work environment” that doesn’t let them express their beliefs openly, religious freedom advocates say.

Michael Berry, senior counsel at the Liberty Institute, a Texas-based legal organization dedicated to defending religious liberty in America, said recent high-profile cases of military chaplains facing punishment for private counseling sessions that reflected the teachings of their religion could cause devout Americans who are qualified for military service to think twice about joining themilitary.

In December, a chaplain for a Ranger training battalion received an administrative letter of concern after a soldier complained that he advocated Christianity and used the Bible during a mandatory unit suicide-prevention training session. The Military Association of Atheists and Freethinkers said the chaplain “used his official position to force his personal religious beliefs on a captive military audience” in an article the group posted on its website.

And, last month, a Navy chaplain was removed from his post and may lose his career after some sailors complained about his private counseling, in which he reportedly advocated against homosexuality and sex outside of marriage.

“People of faith are going to stay away from themilitary,” saidMr. Berryin an interview with The Washington Times.

“I can’t tell you how many moms and dads I’ve spoken to who say, ‘My son or daughter wants to join themilitary, [but] in light of what you’ve described, I’m not sure I want to let them join themilitaryanymore,’ and I don’t blame them. I would have serious reservations about my own kids joining,”Mr. Berrysaid.

Douglas Lee, president of the Chaplain Alliance for Religious Liberty, whose job it is to find people who want to be chaplains and make sure they’re also qualified to serve in themilitary, said growing religious hostility within themilitary is making it harder for him to find potential recruits and for the armed forces to maintain the chaplains it does have.

“I know people who get out, officers and chaplains, who’ve said, ‘I can’t serve the way I want to in this environment,’” saidMr. Lee, who also served as an Army chaplain. “People who’ve said, ‘Because of the religious liberty challenges I see, I think I’ll serve somewhere else.’”

Not being able to recruit or retain these individuals is very dangerous from a national security standpoint, saidMr. Berry, because they could be the military’s next group of leaders, but will never serve because they don’t think they’re welcome.

“We all used to sit around and talk about planning on spending 20 years, but at some point enough is enough,” he said.

Mr. Berry said he thinks the “hostile work environment” that is forcing the most religious persons out of the militaryis only getting worse, and that while in the past problems were mainly in the Air Force, religious liberty issues have spread throughout all the services.

“The problem is getting worse, not better, despite our efforts,” he said. “There is a culture [of] hostility [toward] religion in the military right now.”

While problems in the past have touched all religious groups, Travis Weber, director of the Center for Religious Liberty at the Family Research Council, said he’s seen a recent uptick and pattern of Christians facing persecution for religious expression.